Apparatus for cleaning malt, grain, seeds, &amp;c.



No. 728,604. PATENTED MAY 19,1903..

1 0. G. G. L. J. OVBRBEGK.

APPARATUS POR CLEANING MALT, GRAIN, SEEDS, &0. APPLIUATION Hmm MAY a1, i902. xo -Monm.. Mums-SHEET 1-.

PATENTED MAY 1.9, 190s. 0. G. C. L'. J. OVERBECK.

= APPARATUS `POE CLEANING MALT, GRAIN, SEEDS, &o.

APPLIOATION FILED MAY a1, 1902.

'I0 MODEL. 2 SHEETS-SHEET 2.

nu Norms 21ans co. mmc-umol, wAsmNnTcn, o. c.

UNITED STATES Patented May 19, 1903.

'PATENT OFFICE.

OTTO G. O. L. J. OVERBEOK, OF GRIMSBY, ENGLAND.

SPECIFICATION brmng part 0f Le'trS Patent NO. 728,604, dated May 19, 1903.

Application filed May 3l, 1902. Serial No. 109,721. (No model.)

Be it known that I, OTTO GERHARD CHRIS- TOPH LUDWIG JOSEPH OvERBEoK, F. C. S.,

F. G. S., a subject of the King of Great Britain, residing at Grimsby, in the county of'y Lincoln, England, have invented certain new and useful Apparatus for Cleaning Malt, of which the following is a full, clear, and exact description. Y

My invention consists of an improved apparatus for cleaning malt, grain, seeds, and other material, for which purpose I employa pair of hollow cylindrical perforated brushbodies, each fitted with a helical brush-surface and helical blades xed around said body in combination with a case provided with a feeding-hopper, an outlet for the cleaned material, and an upper air-chamber having a bottom formed of internal louver-boards to direct the air, and an air-outlet. The bottom of the main body of the case is provided with a longitudinal central perforated portion, below which is a box to receive heavy dirt or foreign matter, or liquids, if used.

I will describe my invention by the aid of the accompanying drawings, in which- Figure l is a longitudinal section of the improved apparatus. Fig. 2 is a transverse section. Fig. 3 is a side view of one of the brushrollers. Fig. 4 is a cross-section on the line 4 4 of Fig. 3, and Fig. 5 is a cross-section on the line 5 5 of Fig. l.

a is the main body of the case.

a.' is a movable upper portion forming the dust-chamber and tted with the feed-hopper b, which delivers the material to be cleaned to the interior of the portion ct of the case. The bottom a2 of the dust-chamber a is formed of a horizontal row of inclined louver boards or deflectors fixed crosswise thereof.

The main parta of the case is fitted with a pair of rotating brushes of the following construction.

c is the brush-body, which is in the form of a hollow perforated cylinder closed at both ends.

c is a hollow. perforated axle closed at one end and communicating at the other end with a source of compressed air or steam or other vapors o r liquids, either hot or cold.

c2 represents helical blades fixed around the brush-body, and c3 is a strip of brush ma- .blades o2 between the coilsI of the brush material c3.

d3 is a perforated portion extending longitudinally along the center of the bottom of the part d of the case, and a4 is a box below the bottom of the case a to receive heavy dirt or foreign matter, or liquids, if used, passing through the perforated part ai.

d is the air-outlet, and e is the outlet for the cleaned material.

The action of the apparatus is as follows: Malt, grain, seed, or other material is fed to the apparatus through the hopper b. Compressed air, steam, or other vapors or liquids are supplied to the hollow axle c', and rotary motion is given to the brushes. The malt, grain, seed, or other material is acted upon by the brushes and is gradually worked from the inlet to the outlet e by the helical blades c2. The outlet e is kept charged, and so traps or checks the escape of air for steam thereat. The air, steam, vapor, or liquid enters the hollow axle c', passes through the perforations in the latter, and through the perforations c4 in the brush-body c. It then acts to carry the light dust disturbed by the brushes away through the louver boards or detlectors of the dust-chamber a', said dust, together with the air, steam, vapor, or liquid, escaping by the outlet d. The air, steam, vapor, or liquid also in issuing through the perforations c4 in the brush-body c blows the malt, grain, seed, or other material from one brush to the other, and so greatly assists in the cleaning process. The course of the current of air, steam, vapor, or liquid is indicated in the various figures by the arrows and is contrary to the direction taken by the material to be cleaned.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In an apparatus for cleaning malt, grain, seeds or other material, the combination of a pair of rotating cylindrical brushes each consisting of a hollow cylindrical body with helically-arranged rows of perforations in its. shell, a hollow shaft closed at one end and perforated along the part Within the brush- IOC body for the passage of air or other uid, strips of brush material wound helically around the brush-body between the rows of perforations and helical blades extending around the brush-bod y between the brush material and rows of perforations; a case in which the cylindrical brushes are mounted side by side, an upper part forming a lightdust chamber and an inlet and outlet for the material to be cleaned, substantially as herein set forth.

2. In apparatus for cleaning malt, grain, seeds or other material, the combination of the case consisting of a main body a and movable upper portion a having a feed-hopper h dust-outletd and a horizontal row of inclined deilecting-boards an outlet e for cleaned material in the lower part of the case and a pair of revolving cylindrical brushes mounted in the main part a of the case, each consisting of a hollow cylindrical body c closed at both ends having helically-arranged rows of perforations c4, blades c2 extending helically around the body between the rows of perforations, a strip o8 of brush material wound around said brush-body between the rows of perforations and the helical blades, and a hollow shaft c closed at one end and perfo-` rated in the part passing through the brushbody, for the passage of fluid, substantially as herein set forth.

3. In an apparatus for cleaning malt, grain, seeds or other material, the combination of a pair of .rotating cylindrical brushes each having a hollow body perforated Von the cylindrical part, a hollow shaft closed at one end and perforated along the part within the brush-body through which air, steam, or other vapor or liquid, is adapted to be passed, a stripof brush material wound helically around the brush-body between the helical blades and rows of perforations, intermediate Hhelical blades xed on the brush-body, a case with removable upper part forming a light-dust chamber, a longitudinal perforated portion on the door of the main part of the case, a chamber to receive heavy dirt, foreign matter, or liquids if used, passing through the perforations in said floor, and an inlet and an outlet for the material to be cleaned, substantially as herein set forth.

4. .In an apparatus for cleaning malt, grain, seeds, or other material, the combination of a pair of rotating cylindrical brushes each having a hollow body perforated on the cylindrical part, a hollow shaft closed at one end and perforated along the part within the brush-body through which air, steam, or other vapor or liquid, is adapted to be passed, a helical brush-surface, intermediate helical blades ixed on the brush-body, a case with removable upper part forming a light-dust chamber, fixed louver boards or deliectors forming the bottom of said dust-chamber to permit entrance thereto of the air or steam and dust, an outlet to said dust-chamber, a longitudinal perforated portion on the floor of the main lpart of the case, a chamber to receive heavy dirt, foreign matter, or liquids if used, passing through Athe perforations in said iioor, and an inlet and an outlet for the material to be cleaned, substantially as herein set forth.

In testimony whereof I affix my signature in presence of two witnesses.

OTTO G. C. L. J. OVERBEOK.

Witnesses:

H. J. F. CROSBY, H. E. SHARMAN. 

